Draft-rigging and buffer mechanism.



s. J. STRID. DRAFT RIGGING AND BQFFER MECHANISM.

, APPLICATION man AUG-9.1909- 1,21 9,604. Patented Mar, 20, 1917. 3 SHEETS-SHEET 1.

lama? S. J. STRID.

DRAFT RIGGING AND BUFFER MECHANISM.

I APPUCATION FILED AUG-9 1909- 1,21 9,604. Patented Mar. 20, 1917.

3 SHEETS-SHEET 2.

EFWA QM DRAFT RIGGING AND BUFFER MECHANISM.

APPLICATION FILED AUG-9.1909.

Patented Mar. 20, 1917.

3 SHEETS-@HEET 3.

N NiTED STATES Pa rENT OFFICE.

SVEN J. ST'RIiD, CHICAGO, ILLINOIS, ASSIGNOR OF ONE-HALF TO EDWARD GARLSON, OF ROSELAND, CHICAGO, ILLINOIS.

DRAFT-RIGGING AND BUFFER MECHANISM.

To all *who'm it'may concern:-

. cording to the particular use) in such a" Be it known that I, SvEN J. Srnrn, a subject of :the King of Sweden, residing at Roseland, Chicago, Cook County, Illinois, have invented certain new and useful Improvements in Draft-Rigging and Buifer Mechanism, of whiclrthe following is a specification. v 1

My invention relates to mechanism for use equally in connection with draft-riggingand buffers for railway cars and the like and the object thereof is toproduce a simple and efficient mechanism of 't' his generalcha-racter. Speaking infgeneral terms, I employ a. spring or series of springs. and associate them with'certain parts or members operating in connection with the. buffer.

angle or plate or with the draw-bar (ac-' manner that in the movements of the-buffer angleor the draw-bar the spring or springs are acted upon" in opposite directions, such action taking place in the presentinstance through the medium of curved lever arms whose inner contour is such that the power .arm in the curved lever decreases according to-i ts movement. This andtalso the effect caused by thefriction obtained from the curved lever arms against the socket assists thespringsii'i resisting the thrust. The various features of advantage andutility in my new mechanism will be apparent from the description hereinafter given.

In the drawings, Figure l is a plan view V similar curved bearing surfaces corresponding in contour to the bearing surfaces of of my invention as applied to a draft rigging; Fig. 2 a sideelevation of ,a portion of the structure shown in Fig. 1; Fig. 3 a detail view of the yoke cooperating with the spring; Fig. 4 an end view thereof; Fig. 5 a longitudinal section on line 5'5 of the structure shown in Fig. 8; Fig. 6 a crosssection on the line 6-43 of Fig.8; Fig. 7 a -'detail-section on line 77 of Fig. 5 show- 'ing the structure at the rear end of the springs; ig. 8 a plan View 'ofabuffeeconstructionj'embodying my invent1on;. Fig. 9

a detail view of the yoke shown in Fig. 8;,

and Fig. 10 another detail View of the same y I As hereinbefore stated, my nventionis applicable as well tobuifers or movable )rection toforce he follower lie-outwardly,

' Specification tr Letters Patent.

platforms as to draft rigging and I have ac- .with the draft rrigging construction which is illustrated in Figs. 1 to 44 The structure shown inFig. 1 comprises as usual an end sill 1 and the two" center SlllS Between these center sills I secure. two similar metallic supports 3 of irregular shape and adapted to 'srnj'port'the spring mechanism and associated parts. metallic supports are in practice castings and are technically called lug-castings because of the fact that they are composed of. plates secured to the center sills and provided with lugs which engage or cooperate with the-parts which they are to support. The usual draw-head i is provided with a rectangular-shaped strap 5 which extends around a movable block 6 adapted to move longitudinally in said supports or lug castings-3 ashereinafter made apparent. Within said strap 5 is arranged a yoke 7 open at its inner endwhere. it projects into the block 6 and forming a spring seat or abutment at its bottom or outer end fora heavy coiled spring 8. In practice this outer end of the yoke does not bear directly against the draw-bar 'structure but av block or follower 9 is interposed. The block 6 has at its outer end a socket portion into which the yoke 7 extends as stated and the bottom of such socket portion is provided with two These Patented Mar. 20, 1917.- Application illed- August 9, 1909. Serial No, 511,942.

two.simil ar movable levers 10 as clearly spring-seat for the spring-8:

As a result of the foregoing construction, it is evident that when the draw-bar is forced inwardly, for instance, the thrust is communicated to, the yoke, thereby compressing the coiled spring and at the same time the inward? movement of the yoke causes a moveme t of the levers :10 in a d1- that is to further compress the coiled spring,

the two curved levers decreasing in their power arms with the movement of the yoke, thereby assisting the spring. At the same time the rather large bearing surface of these levers creates a friction which also aids the spring in resisting the thrust of the draw-bar. It will be understood that in this inward movement of the draw-bar the block 6 is limited as to inward movement by means of the lugs 3 on the lug castings 3; The structure is also designed to etiiciently resist the outward pull of the drmv-bar or head, inasmuch as in such action 'the strap 5 of the draw-bar which isin contact with the block 6 will draw the latter outwardly whereupon the same general spring and friction action as before willtake place. It will be particularly noted that when this block is is moved outwardly the levers 10 will be forced against the follower 11 to move the latter and thereby compress the coiled spring. It will be understood that in this particular action the outward movement of the-yoke 7 and the follower 9 is limited by means of the lugs 3" of the lug castings 3.

\Yhen my invention is applied to a buffer the same general construction is employed and the same general operation takes place. As shown in Fig. .8 the so-called buffer angle or plate 12 is pivotally connected as usual with the two side stems 13 having the usual springs 14. A center stem 15 bears at its outer end against the butter angle, but in such a manner as not to interfere with the pivotal or tilting action thereof. The inner end of this center stem engages or cooperates with the bottom of ayoke 16 which has a sliding movement in the frame/or supports 17 mounted upon the two center sills 17 which are here of the I-beam constriu-tion. In this particular instance l employ a plurality of heavy coiled springs 1h, arranged within the yoke 16 with their outer ends bearing against the bottom of the yoke and with their inner ends bearing against a follower 19. The two movable levels 20 are adapted to move in corresponding sockets in astationary block .21 in the sanm'manner as the levers hereinbefore describcd.- \Vhen the butter angle is forced inwardly, the yoke 16 is likewise moved in the same direction, with the result that the contact of the inner ends of the yoke with the levers it) will force the inner ag, the. litillfitlllctlnll being such BEST AVAILABLE Cop that the spring is operated upon, that is compressed from opposite directions and lit-the same time the. advantageous effects in the curved lever arm's decreasing in their power arms simultaneously with the movement in the yoke, and also the friction in thecurved levers, are obtained.

It, will be understood that the yoke is freely movable within its supports as distinguished from constructions wherein friction is applied or caused during the. movements thereof and therefore my yoke may be said to be frictionless. I obtain all of the bulling action or resistance through the medium of a spring or springs which are-compressed initially in the coming together of the cars, for instance, by the force-of such 'contactand subsequently by the movement of a follower in the opposite direction caused by the Contact of the two arms of'the yoke with the curved levers which overlap as shown and move in opposite directions to force the follower in the same direction.

I claim:

1 A vdevice of the character described comprising a one-piece yoke which has a free rectilirar movement and which has two parallel arms, a spring arranged therein and bearing against the outer end of the yoke,

and a pair of levers acted upon and moved by said arms to cause such levers to act against the spring tocompress it in all pulling and bufiing movements, the line and direction of the pressure being from the yoke through the levers to the spring. and the yoke and levers transmitting the entire pressure due from said movements.

2. A device of the character described comprising a one-piece yoke which has a free rectilinearmovement and which has'two parallel arms, a spring arranged therein and having one end bearing against the outer end of the yoke, a follower at the other end of the spring, and a pair of levers whose outer ends are acted upon amt moved in unison by the arms of the yoke to cause the inner ends of the levers to bear against the follower to compress the spring in all pulling and bulling movements, the line and direction of the pressure being from the yoke through the levers, to the spring, and the yoke and levers transmitting the entire pressure due from said movements.

3. A (l\.\'l(f0 of the character desx-rilaal comprising a one-piece yoke which has a free. rectilinear movement and which has two parallei arms, a spring arranged therein and having one end bearing against the outer end i of the yoke, a followc: at the other end of the spring, and a pair of similar curved levers acted upon at one end of said arms of the yoke and arranged at their other end to act upon the spring to compress it in all ming and butting movements, the line an direction of the pressure being from the yoke,

through the levers, to the spring, and the yoke and levers transmitting the entire pres sure duefrom said movements.

4. A device of the character described comprising a one-piece yoke which has a free' rectilinear movement and which has'two parallel varms, a spring arranged therein and having one endbearing against the outer end of the yoke, afollower at the other end of the spring, a pairof'similar curvedand overlapping levers acted upon at one end by said arms of the yoke, and arranged at their other end to act upon the spring to compress it in all pulling and bufiing movements, and draft beams between which said yoke has its said movements 1 5. A device of the character described comprising a one-piece yoke which has a free rectilinear movement and whlch has two par allel arms, a spring arranged therein and having one end bearing against the outer end of the yoke,-a block which is located at the press it, said levers bearing against said lock, the line and direction of the pressure being. from the yoke through the levers to open end of the yoke and which is uncone nected therewith, and a pair of levers whose outer ends are acted upon andmoved by the arms of theyoke and whose inner ends are arranged to act against the spring, to comthe spring, and the yoke and levers transmitting the entire pressure due from all-pulling and butting movements.

6. A device of the. character described comprising a one-piece. yoke which has a free rectilinear movement and which'has two parailel arms, a spring arranged therein andhaving one end bearing against the outer end of the yoke, a block located at the open end of the yoke and having a sliding. fit therein but being unconnected therewith, said block having two curved sockets and a pair of similar curved levers received by and movable in said sockets and adapted to be moved by the arms of the yoke in their movements to cause compression of the spring;

'7. A device of the character described comprising a one-piece yoke which has a free rectilinear movement and which has two pare allel arms, a spring arranged therein and havingone end bearing against'the outer end of the yoke, a block located at the open end of the yoke and having a sliding fit therein but unconnected therewith, said block having two curved sockets, a follower at the other end ofthe spring, a pair of levers interposed between the block and spring and ar I ranged to be contacted and operated by the arms of the yoke, and a follower 9 against whichthe outer end of said yoke bears.-

8. A. device of the character described comprising a one-piece yoke which has a free rectilinear movement Y and which has two parallel'arms, a spring arranged therein '1' nd having one end bearing against the end. a a v 10. In combination with a draw bar and outer end of the yoke, a supporting member for the yoke, a block movable between such members and at the open end of theyoke" and being unconnected with such yoke, a v

follower, arranged withinthe yoke and cooperating with the spring, a second follower 9 which is arranged between said mem-.

bers and against which the outer end of the yoke bears, and a pair of levers interposed between. the block and follower 19 and adapted to move in opposite directions and in unison upon such follower, the line and direction of the pressure being fronr the yoke,tl1rough the levers, to the spring, and

'the"yoke and levers transmittingthe entire vpressure due from pulling and buffing movcments. 1 Y

9. A device of the character. described comprising a one-piece yoke which has a free rectilinear movement and which has two parallel arms, a spring arranged therein and having one end bearing against the overlapping levers arranged within the block and'interposed between the arms of I the-yoke and the spring, and a follower 9 which is movable between the beams and against which the a strap at the inner end thereof, a frictionless yoke movable with the draw bar, a spring therein, a block movable with. the strap in one direction and levers interposed arms of the yoke, the line and direction of thepressure being from the yoke through the levers to the spring.

. 11. In combination with a draw-bar and yoke bears at its outer" a strap at the inner end thereof, a one-piece yoke 7 having parallel arms, a spring 8 therein, a follower 9 against which the yoke bears at its outer end, a block 6 in which said arms freely slide, a follower 11 :freely.

movablefi'vithi-n the yoke and cooperating with the spring, and a pair of curved levers 1O interposed between the block and 1301- lower, the line and direction of the pressure being from the yoke through the levers and follower to the spring and the yoke and levers transmitting the entire pressure due from pulling or buffing movements to the spring,

. 12. A device of the character described comprising a movable yoke, a spring there- 'in, and two levers having overlapping ends and-acted upon by opposite sides of the yoke 105 between the block and spring and operated .1n' unison to compress the sprlng to resist the biuling action when contacted by the having a friction surface, a segmental fricin its movements and arranged to act upon move from different points but in substantially the same direction at their overlapping ends against and longitudinally of the spring, and'said levers being curved to cause an increase in their leverage upon the spring as the yoke continues to move with the huiiing force.

lit A device of the character described comprising a movable yoke, a spring therein, a follower at one'end of the spring and two levers having overlapping ends and acted .upon by opposite sides of the yoke in its movements and arranged to act upon the spring to compress the same to resist butting action, said levers being arranged to move from different points but in substantially the same direction at their overlapping ends against the follower and longitudinally of thespring, and-said levers being curved to cause an increase in their leverage upon the spring as the yoke continues to move with the balling force.

14. Adevice of the character described comprising a movable yoke, aspring there in, levers acted upon by theyoke in its movements, a follower interposed between the levers and the spring, and .a block having curved sockets, said levers being correspondingly curved and having ends overlapping and movable against the follower.

15. A device of the character described, comprising a movable yoke, a spring therein, levers acted upon by the yoke in its ,inovements, a follower interposed between the levers and the spring, and a block having socket bearings for the levers, suchv levers having ends overlapping and movable against the follower.

- 16.1111 :1 frictiondrafl rigging, a member tion element having a rotative friction engagement with such surface, a longitudinally movable follower member in contact with one end of such element, and another longitudinally movable follower member in contact avith the other end of the element; substantially as described.

17. In a friction draft rigging, a member having arciiate friction surfaces, a plurality of friction elements having coacting friction surfaces. a front follower arranged toengage one end of each of said elements, and airii'mer follower having engagement with the opposite ends of said elements, together with springs seating against the inner follower and the front follower; substantially as described.

18. In frictional shock-absorbing mecha nism, an arcuate friction element rotatable about a single axis; a plurality of followers;

and a spring, the spring being arranged longitudinally of the iiiechanism', said friction BEST AvAir/isis tionally engaged intermediate its ends by another follower.

19. In frictional shock-absorbing mechanism, an arcuate friction element rotatable "about a single axis; a plurality of followers;

and a spring, said friction element being engaged at both its ends by longitudinallyiuovable followers and frictionallyengaged intermediate its ends by a. socket bearing on another follower, said socket being curved to the arc of a circle whose center is coincident with the axis of rotation of said friction element.

20. In friction shock-absorbing mechanism, an arcuatefriction element; 'a plu-v rality of followers: and a spring,'said friction element being adapted to rotate in a frictional socketbearing in one of said followers and being engaged at both its ends by other followers, all of said followers being longitudinally movable to cause said friction element to rotate in its socket.

21. In a friction draft rigging, a follower having a curved socket portion, a rotative friction element seated in said socket portion, a second follower, arranged to be'moved in an opposite direction from the first follower, engaging oneend of said friction element, an inner follower engaging the other end of said friction element, and a spring interposed between the first named follower and the inner follower; substantially as devscribed.

22. In a draft rigging, spring mechanism. loosely mounted levers at one end thereof;

-the levers being adapted to bear u on said spring mechanism, a follower at t e other end of the spring mechanism and an extension stationary with relation to the follower and adapted. to form a fulcrum connection between the latter and one end of the lovers.

23. In a draft rigging spring mechanism, loosely mounted levers tat oiie end thereof, the levers being adapted to bear upon said spring mechanism, a follower at the other end of the spring mechanism and an exten-' sion stationary with relation to the follower and adapted to form a fulcrum connection between the latter and one end of the levers, such levers being normally out of engagement with their fulcrum connection.

24. A draft rigging for cars comprising an elongated member having one end open, levers arranged adjacent to the open end of sa id member and normally out of engagement therewith, and spring mechanism located within said member and arranged to exert pressure on said levers, the member and levers being arranged to project beyon the line of the draw bar.

A draft rigging for cars comprising cheek plates provided with draft lugs at both ends thereof, a hollow member, levers arranged at one end 'of said member and yleldlngly held out of osltlve engagement therewith, coacting sur aces whereby movement of the levers lengthwlse of one another is prevented, and a draw-bar extension arti-on so that the force applied by the drawbar will bein a line substantially parallel with the sides of the car.

l t, SVE'N J. STRID.

Witnesses: I HIRAM VANDERBILT, JACOB VANDERBILT. 

